What it is:
A year-by-year catalog of the entire history of April Fool's Day.
You can browse the archive by year and time-period, to find out what pranks, jokes, and hoaxes were perpetrated on all the various
April Firsts throughout history. Or you can browse it by category.

The archive is a work in progress, which I'm always trying to add to. So if you know of any good examples that I've missed
DEFINITELY LET ME KNOW! I'm particularly eager to hear about non-English-language April Fools,
since those are the hardest for me to research.